EP0902733B1 - Strip casting plant - Google Patents

Strip casting plant Download PDF

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Publication number
EP0902733B1
EP0902733B1 EP97926988A EP97926988A EP0902733B1 EP 0902733 B1 EP0902733 B1 EP 0902733B1 EP 97926988 A EP97926988 A EP 97926988A EP 97926988 A EP97926988 A EP 97926988A EP 0902733 B1 EP0902733 B1 EP 0902733B1
Authority
EP
European Patent Office
Prior art keywords
strip
strip casting
lateral limiters
casting
casting plant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97926988A
Other languages
German (de)
French (fr)
Other versions
EP0902733A1 (en
Inventor
Klaus Schwerdtfeger
Karl-Heinz Spitzer
Paul Freier
Thomas Von Hinrichs
Wolfgang Reichelt
Ulrich Urlau
Ewald Feuerstacke
Joachim Kroos
Michael Brühl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salzgitter AG
SMS Siemag AG
Original Assignee
Salzgitter AG
SMS Demag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19622925A external-priority patent/DE19622925C2/en
Application filed by Salzgitter AG, SMS Demag AG filed Critical Salzgitter AG
Publication of EP0902733A1 publication Critical patent/EP0902733A1/en
Application granted granted Critical
Publication of EP0902733B1 publication Critical patent/EP0902733B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0642—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams

Definitions

  • the invention relates to a strip caster, in particular for the strip casting of steel.
  • the thickness of the finished roll can be reduced Hot strip (1 to 3 mm) as well as the required hot forming to achieve this sufficient material properties, the casting thickness of the strip is largely chosen optimally (e.g. approx. 10 mm).
  • Such a construction is technically very complex. It is also suitable for essential only for relatively small bandwidths. With larger bandwidths this is due to the thermal stress applied in the carrier much higher than that of narrow Bands, so that with large bandwidths, the construction acting as stiffening chain-like circumferential side boundary cannot be used.
  • the invention has for its object to provide a strip caster in which not only solidified steel adheres to the feed device and to the Side boundaries are reliably avoided, but also influence the potted Tape can be taken.
  • the vibrations of the feed devices and the side boundaries are formed perpendicular to the conveying direction of the belt.
  • the Vibration therefore takes place in the plane of the carrier tape or the potted one Steel belt, but across the conveying direction.
  • This has the advantage that the constructive Effort is less than with a vibration in the conveying direction, in which the Side boundary would have to be guided exactly over the entire length.
  • the vibration in the region of the metallurgical length is advantageous (from the casting area to the solidification of the belt) can be optimally adjusted by for example, the page boundaries in this area with individual sections each optimal frequency and amplitude can be divided.
  • the side boundaries can be set at an angle to each other. This refers to both the opposite page boundaries and the any existing sections of the respective page. This allows the potted tape improves the uniformity of the tape thickness over the entire width become.
  • the side boundaries are also opposite the vertical Carrier tape surface inclined.
  • the side wall boundaries consist of water-cooled hollow profiles.
  • the devices for generating the vibrations are preferably eccentric drives, however, electromagnets or hydraulic cylinders can also be used.
  • the Waveform can be sinusoidal, sawtooth-shaped or trapezoidal.
  • the stroke frequency is, for example, 50 Hz with a stroke of, for example, 0.5 mm.
  • the The cooling water is supplied via flexible hoses. With one preferred over the Potted tape is used to seal between the existing cover Side borders and the covers a layer of temperature-resistant Sealing material, in particular arranged from ceramic fiber felt.
  • a corresponding Sealing is provided between the feed device and the carrier tape, wherein preferably an aluminum sheet between the carrier tape and the seal is inserted so that only one relative movement between the vibration Felt layer and the aluminum sheet is done.
  • the feeder and the Side boundaries are preferably held by coil springs.
  • the limitations can both swing vertically and parallel to the belt movement (casting direction), so that overall gives a shear force also acting in the casting direction on the belt edge.
  • the vibration has components in all three spatial directions.
  • the vibration can take place perpendicular to the belt surface.
  • the vibrations are excited by blows in Longitudinal or transverse direction of the side boundary. This can suddenly Longitudinal waves are applied with which the adherence is effectively prevented can be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Coating With Molten Metal (AREA)
  • Induction Machinery (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Casting Devices For Molds (AREA)
  • General Details Of Gearings (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Structure Of Belt Conveyors (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

The invention relates to a strip casting plant with side limits arranged closely adjacent to a carrying belt. The side limits, and preferably the supply device for molten metal, are capable of vibrating and are connected to a device for producing vibrations. The adhesion of solidified material can thus be prevented.

Description

Die Erfindung betrifft eine Bandgießanlage, insbesondere für das Bandgießen von Stahl. Beim Bandgießen von Stahl kann entsprechend der benötigten Dicke beim fertiggewalzten Warmband (1 bis 3 mm) sowie bei der erforderlichen Warmverformung zur Erzielung ausreichender Materialeigenschaften die Gießdicke des Bandes weitgehend optimal gewählt werden (z. B. ca.10 mm).The invention relates to a strip caster, in particular for the strip casting of steel. When steel strip is cast, the thickness of the finished roll can be reduced Hot strip (1 to 3 mm) as well as the required hot forming to achieve this sufficient material properties, the casting thickness of the strip is largely chosen optimally (e.g. approx. 10 mm).

Aus DE 31 42 099 ist eine Vorrichtung zum Stranggießen von Metall bekannt, die eine Zuführeinrichtung für flüssiges Metall, ein Trägerband für flüssiges und erstarrtes Metall und an dem Trägerband dicht anliegende Seitenbegrenzungen aufweist. Die Seitenbegrenzungen sind nach Art einer Gliederkette an dem Trägerband befestigt.From DE 31 42 099 a device for continuous casting of metal is known, the one Feeder for liquid metal, a carrier tape for liquid and solidified metal and has tightly fitting side boundaries on the carrier tape. The Side boundaries are attached to the carrier tape in the manner of a link chain.

Eine derartige Konstruktion ist technisch recht aufwendig. Sie eignet sich auch im wesentlichen nur für relativ geringe Bandbreiten. Bei größeren Bandbreiten ist die durch die thermische Belastung aufgebrachte Spannung im Träger wesentlich höher als bei schmalen Bändern, so daß bei großen Bandbreiten die als Versteifung wirkende Konstruktion der kettenartig umlaufenden Seitenbegrenzung nicht einsetzbar ist.Such a construction is technically very complex. It is also suitable for essential only for relatively small bandwidths. With larger bandwidths this is due to the thermal stress applied in the carrier much higher than that of narrow Bands, so that with large bandwidths, the construction acting as stiffening chain-like circumferential side boundary cannot be used.

Bei einer relativ zur Förderrichtung des vergossenen Bandes beziehungsweise des Trägers feststehenden Seitenbegrenzung kommt es vereinzelt während des Gießvorganges zum Anhaften von erstarrtem Stahl. Dies führt zu massiven Fehlern des Bandes und Betriebsstörungen bis hin zum Abbruch des Gießens. Ähnliche Probleme treten an der Zuführeinrichtung auf. Auch an dieser haftet vereinzelt erstarrter Stahl an, was zu den gleichen Schwierigkeiten führt.With a relative to the conveying direction of the cast tape or the carrier Fixed side boundary occurs occasionally during the casting process Adhesion of solidified steel. This leads to massive errors in the tape and Malfunctions up to the termination of the casting. Similar problems arise Feeder on. Here, too, solidified steel adheres, which leads to the same difficulties.

Um dieses zu vermeiden, ist es bei Bandgießanlagen bekannt, die dicht am Trägerband anliegenden Seitenbegrenzungen schwingfähig auszubilden und mit einer Einrichtung zur Erzeugung von Schwingungen zu verbinden.To avoid this, it is known in belt casting systems that are close to the carrier belt adjacent side boundaries trained to vibrate and with a device for To connect generation of vibrations.

Der Erfindung liegt die Aufgabe zugrunde, eine Bandgießanlage anzugeben, bei der nicht nur das Anhaften von erstarrtem Stahl an der Zuführeinrichtung und an den Seitenbegrenzungen zuverlässig vermieden wird, sondern auch Einfluß auf das vergossene Band genommen werden kann.The invention has for its object to provide a strip caster in which not only solidified steel adheres to the feed device and to the Side boundaries are reliably avoided, but also influence the potted Tape can be taken.

Diese Aufgabe wird in Verbindung mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 dadurch gelöst, dass die Seitenbegrenzungen in einem Winkel zueinander einstellbar angeordnet sind.This task is done in conjunction with the features of the preamble of Claim 1 solved in that the side boundaries at an angle are adjustable to each other.

Bei der erfindungsgemäßen Lösung sind die Schwingungen der Zuführeinrichtungen und der Seitenbegrenzungen senkrecht zur Förderrichtung des Bandes ausgebildet. Die Schwingung erfolgt also in der Ebene des Trägerbandes beziehungsweise des vergossenen Stahlbandes, aber quer zur Förderrichtung. Dies hat den Vorteil, daß der konstruktive Aufwand geringer ist, als bei einer Schwingung in Förderrichtung, bei der die Seitenbegrenzung über die gesamte Länge exakt geführt werden müßte. Außerdem kann bei dieser Ausführung vorteilhaft die Schwingung im Bereich der metallurgischen Länge (vom Abgießbereich bis zur Durcherstarrung des Bandes) optimal eingestellt werden, indem zum Beispiel die Seitenbegrenzungen in diesem Bereich in einzelne Abschnitte mit jeweils optimaler Frequenz und Amplitude unterteilt werden.In the solution according to the invention, the vibrations of the feed devices and the side boundaries are formed perpendicular to the conveying direction of the belt. The Vibration therefore takes place in the plane of the carrier tape or the potted one Steel belt, but across the conveying direction. This has the advantage that the constructive Effort is less than with a vibration in the conveying direction, in which the Side boundary would have to be guided exactly over the entire length. Besides, can in this embodiment, the vibration in the region of the metallurgical length is advantageous (from the casting area to the solidification of the belt) can be optimally adjusted by for example, the page boundaries in this area with individual sections each optimal frequency and amplitude can be divided.

Zusätzlich sind die Seitenbegrenzungen in einem Winkel zueinander einstellbar. Dies bezieht sich sowohl auf die gegenüberliegenden Seitenbegrenzungen als auch die an der jeweiligen Seite gegebenenfalls vorhandenen Abschnitte. Hierdurch kann an dem vergossenen Band die Gleichmäßigkeit der Banddicke über die gesamte Breite verbessert werden. Insbesondere sind die Seitenbegrenzungen auch gegenüber der Senkrechten zur Trägerbandoberfläche geneigt.In addition, the side boundaries can be set at an angle to each other. This refers to both the opposite page boundaries and the any existing sections of the respective page. This allows the potted tape improves the uniformity of the tape thickness over the entire width become. In particular, the side boundaries are also opposite the vertical Carrier tape surface inclined.

Nach einem bevorzugten Ausführungsbeispiel bestehen die Seitenwandbegrenzungen aus wassergekühlten Hohlprofilen.According to a preferred embodiment, the side wall boundaries consist of water-cooled hollow profiles.

Die Einrichtungen zur Erzeugung der Schwingungen sind bevorzugt Exzenterantriebe, jedoch können auch Elektromagnete oder Hydraulikzylinder eingesetzt werden. Die Schwingungsform kann unter anderem sinusförmig, sägezahnförmig oder trapezförmig sein. Die Hubfrequenz beträgt zum Beispiel 50 Hz bei einem Hub von zum Beispiel 0,5 mm. Die Zufuhr des Kühlwassers erfolgt über flexible Schläuche. Bei einer bevorzugt über dem vergossenen Band vorhandenen Abdeckung ist zur Abdichtung zwischen den Seitenbegrenzungen und der Abdeckungen eine Schicht aus temperaturbeständigem Dichtmaterial, insbesondere aus Keramikfaserfilz angeordnet. Eine entsprechende Abdichtung ist zwischen der Zuführeinrichtung und dem Trägerband vorgesehen, wobei bevorzugt zwischen dem Trägerband und der Abdichtung noch ein Aluminiumblech eingeschoben ist, so daß bei einer Schwingung nur eine Relativbewegung zwischen der Filzschicht und dem Aluminiumblech erfolgt. Die Zuführeinrichtung und die Seitenbegrenzungen sind bevorzugt durch Schraubenfedern gehalten.The devices for generating the vibrations are preferably eccentric drives, however, electromagnets or hydraulic cylinders can also be used. The Waveform can be sinusoidal, sawtooth-shaped or trapezoidal. The stroke frequency is, for example, 50 Hz with a stroke of, for example, 0.5 mm. The The cooling water is supplied via flexible hoses. With one preferred over the Potted tape is used to seal between the existing cover Side borders and the covers a layer of temperature-resistant Sealing material, in particular arranged from ceramic fiber felt. A corresponding Sealing is provided between the feed device and the carrier tape, wherein preferably an aluminum sheet between the carrier tape and the seal is inserted so that only one relative movement between the vibration Felt layer and the aluminum sheet is done. The feeder and the Side boundaries are preferably held by coil springs.

Nach einer weiter bevorzugten Ausführung können die Begrenzungen gleichzeitig sowohl senkrecht als auch parallel zur Bandbewegung (Gießrichtung) schwingen, so daß sich insgesamt eine auch in Gießrichtung wirkende Schubkraft auf die Bandkante ergibt. Insbesondere weist die Schwingung Komponenten in allen drei Raumrichtungen auf.According to a further preferred embodiment, the limitations can both swing vertically and parallel to the belt movement (casting direction), so that overall gives a shear force also acting in the casting direction on the belt edge. In particular, the vibration has components in all three spatial directions.

Des weiteren kann die Schwingung senkrecht zur Bandoberfläche erfolgen.Furthermore, the vibration can take place perpendicular to the belt surface.

In einer besonderen Ausführung erfolgt die Anregung der Schwingungen durch Schläge in Längs- oder Querrichtung der Seitenbegrenzung. Hierdurch können schlagartig Longitudinalwellen aufgebracht werden, mit denen das Anhaften wirkungsvoll unterbunden werden kann.In a special version, the vibrations are excited by blows in Longitudinal or transverse direction of the side boundary. This can suddenly Longitudinal waves are applied with which the adherence is effectively prevented can be.

Claims (3)

  1. Strip casting unit with a feed mechanism for molten metal, a support strip for molten and solidified metal and lateral limiters in close contact with the support strip, in which the feed mechanism and the lateral limiters are made able to oscillate in the plane of the support strip and are linked to a device for the production of oscillations perpendicular to the movement direction of the strip,
    characterised in that
    the lateral limiters can be set at an angle to one another.
  2. Strip casting unit according to Claim 1,
    characterised in that
    the oscillations of the lateral limiters take place simultaneously both perpendicular and parallel to the casting direction.
  3. Strip casting unit according to either of the above claims,
    characterised in that
    the lateral limiters consist of one or more sections of water-cooled hollow profiles.
EP97926988A 1996-06-07 1997-06-02 Strip casting plant Expired - Lifetime EP0902733B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19622925A DE19622925C2 (en) 1996-06-07 1996-06-07 Process for producing a thin strip and thin strip casting machine
DE19622925 1996-06-07
DE19636698 1996-09-10
DE19636698 1996-09-10
PCT/DE1997/001153 WO1997047413A1 (en) 1996-06-07 1997-06-02 Strip casting plant

Publications (2)

Publication Number Publication Date
EP0902733A1 EP0902733A1 (en) 1999-03-24
EP0902733B1 true EP0902733B1 (en) 2001-04-25

Family

ID=26026409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97926988A Expired - Lifetime EP0902733B1 (en) 1996-06-07 1997-06-02 Strip casting plant

Country Status (19)

Country Link
US (1) US20010047856A1 (en)
EP (1) EP0902733B1 (en)
JP (1) JP4307555B2 (en)
CN (1) CN1156349C (en)
AT (1) ATE200750T1 (en)
AU (1) AU722254C (en)
BR (1) BR9709660A (en)
CA (1) CA2268944C (en)
CZ (1) CZ297654B6 (en)
DE (1) DE59703440D1 (en)
DK (1) DK0902733T3 (en)
ES (1) ES2155997T3 (en)
GR (1) GR3036274T3 (en)
HU (1) HUP9901449A3 (en)
PL (1) PL184229B1 (en)
SK (1) SK284048B6 (en)
TR (1) TR199802539T2 (en)
UA (1) UA46847C2 (en)
WO (1) WO1997047413A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000117397A (en) * 1998-10-21 2000-04-25 Nippon Steel Corp Casting method for thin steel sheet
DE102010005226C5 (en) * 2010-01-21 2020-02-13 Fritz-Peter Pleschiutschnigg Band casting method and apparatus
DE102010048004A1 (en) * 2010-10-07 2012-04-12 Sms Siemag Aktiengesellschaft strip caster
US11027330B2 (en) 2016-08-10 2021-06-08 Nucor Corporation Method of thin strip casting

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60223647A (en) * 1984-04-20 1985-11-08 Hitachi Cable Ltd Casting method for high concentration Al-Zr alloy
JPS6142454A (en) * 1984-08-07 1986-02-28 Sumitomo Heavy Ind Ltd Belt type continuous casting machine
JPS6142455A (en) * 1984-08-07 1986-02-28 Sumitomo Heavy Ind Ltd Belt type continuous casting machine
JPS6156756A (en) * 1984-08-28 1986-03-22 Mitsubishi Heavy Ind Ltd Belt type continuous casting equipment
JPS61172657A (en) * 1985-01-25 1986-08-04 Sumitomo Heavy Ind Ltd Belt type continuous casting machine
JPS61176450A (en) * 1985-01-31 1986-08-08 Ishikawajima Harima Heavy Ind Co Ltd Endless track type continuous casting installation
JPS62230458A (en) * 1986-04-01 1987-10-09 Nippon Steel Corp Single-side solidification type continuous casting apparatus
DE4240849A1 (en) * 1992-12-04 1994-06-09 Didier Werke Ag Process for forming a separation gap, especially in metallurgy
JPH06210411A (en) * 1993-01-12 1994-08-02 Nippon Steel Corp Single belt type continuous casting apparatus

Also Published As

Publication number Publication date
BR9709660A (en) 2000-01-25
CA2268944A1 (en) 1997-12-18
AU722254C (en) 2001-10-25
US20010047856A1 (en) 2001-12-06
JP2001513702A (en) 2001-09-04
CA2268944C (en) 2005-03-29
GR3036274T3 (en) 2001-10-31
EP0902733A1 (en) 1999-03-24
CZ297654B6 (en) 2007-02-21
SK168398A3 (en) 1999-05-07
ES2155997T3 (en) 2001-06-01
SK284048B6 (en) 2004-08-03
HUP9901449A1 (en) 1999-08-30
TR199802539T2 (en) 1999-02-22
UA46847C2 (en) 2002-06-17
AU3164697A (en) 1998-01-07
WO1997047413A1 (en) 1997-12-18
ATE200750T1 (en) 2001-05-15
HUP9901449A3 (en) 2000-01-28
DK0902733T3 (en) 2001-05-28
CN1156349C (en) 2004-07-07
CN1226849A (en) 1999-08-25
DE59703440D1 (en) 2001-05-31
PL330402A1 (en) 1999-05-10
PL184229B1 (en) 2002-09-30
AU722254B2 (en) 2000-07-27
CZ401598A3 (en) 1999-08-11
JP4307555B2 (en) 2009-08-05

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